1. User selects data source.
The system displays the options available: CSV file and OSCommerce store.
The system displays the required metadata to retrieve the data: for CSV files the filename, for osCommerce stores the connection settings.
The system reads the selected data source and checks its format. The format is arbitrary, not user defined.
The system displays a preview of the data source.
The user confirms the data is correct.

2. User selects data target.
The system displays the options available: CSV file and OSCommerce store.
The system displays the required metadata to retrieve the data: for CSV files the filename, for osCommerce stores the connection settings.